Essay
Light Travel Time: Because of the finite speed of light, we see more distant objects as they were in the past. For example, we see the star Alpha Centauri as it was 4.4 years ago, and the Andromeda Galaxy as it was 2.5 million years ago. Astronomers are often asked how we know that these objects still exist when we look at them in the night sky. How would you try to answer this question?
Correct Answer:
Answered by ExamLex AI
One way to answer this question is to ex...View Answer
Unlock this answer now
Get Access to more Verified Answers free of charge
Correct Answer:
Answered by ExamLex AI
View Answer
Unlock this answer now
Get Access to more Verified Answers free of charge
Q18: What do astronomers mean by the Big
Q19: Which of the following is largest?<br>A)1 light-
Q20: Compared to its size, the Milky Way
Q21: Which of the following correctly lists speeds
Q24: One of the most fundamental discoveries about
Q25: On a cosmic calendar, in which the
Q27: When we look at an object that
Q28: The farthest bright galaxies that modern telescopes
Q79: Starting from the Big Bang,briefly explain how
Q90: Consider the following statement,and explain whether or